Index: madwifi-trunk-r3314/ath/if_ath.c
===================================================================
--- madwifi-trunk-r3314.orig/ath/if_ath.c	2008-03-07 01:53:50.021034889 +0100
+++ madwifi-trunk-r3314/ath/if_ath.c	2008-03-07 01:54:31.203381737 +0100
@@ -1695,8 +1695,6 @@
 	 * get to reality.  This value is used in monitor mode and by tools like
 	 * Wireshark and Kismet.
 	 */
-	ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
-
 	ATH_RXBUF_LOCK_IRQ(sc);
 	if (sc->sc_rxbufcur == NULL)
 		sc->sc_rxbufcur = STAILQ_FIRST(&sc->sc_rxbuf);
@@ -8967,6 +8965,7 @@
 			sc->sc_curchan.channel);
 		sc->sc_stats.ast_per_calfail++;
 	}
+	ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
 
 	ath_hal_process_noisefloor(ah);
 	if (isIQdone == AH_TRUE) {
@@ -9035,6 +9034,7 @@
 	struct ath_softc *sc = dev->priv;
 
 	(void) ath_chan_set(sc, ic->ic_curchan);
+	ic->ic_channoise = ath_hal_get_channel_noise(sc->sc_ah, &(sc->sc_curchan));
 	/*
 	 * If we are returning to our bss channel then mark state
 	 * so the next recv'd beacon's TSF will be used to sync the
@@ -9303,6 +9303,7 @@
 		}
 
 		ath_hal_process_noisefloor(ah);
+		ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
 		/*
 		 * Reset rssi stats; maybe not the best place...
 		 */
Index: madwifi-trunk-r3314/net80211/ieee80211_wireless.c
===================================================================
--- madwifi-trunk-r3314.orig/net80211/ieee80211_wireless.c	2008-03-07 01:53:48.708960118 +0100
+++ madwifi-trunk-r3314/net80211/ieee80211_wireless.c	2008-03-07 01:54:31.211382196 +0100
@@ -4358,6 +4358,7 @@
 	si->isi_state = ni->ni_flags;
 	si->isi_authmode = ni->ni_authmode;
 	si->isi_rssi = ic->ic_node_getrssi(ni);
+	si->isi_noise = ic->ic_channoise;
 	si->isi_capinfo = ni->ni_capinfo;
 	si->isi_athflags = ni->ni_ath_flags;
 	si->isi_erp = ni->ni_erp;
Index: madwifi-trunk-r3314/net80211/ieee80211_ioctl.h
===================================================================
--- madwifi-trunk-r3314.orig/net80211/ieee80211_ioctl.h	2008-03-07 01:53:48.440944845 +0100
+++ madwifi-trunk-r3314/net80211/ieee80211_ioctl.h	2008-03-07 01:54:31.211382196 +0100
@@ -311,6 +311,7 @@
 	u_int16_t isi_state;		/* state flags */
 	u_int8_t isi_authmode;		/* authentication algorithm */
 	u_int8_t isi_rssi;
+	int8_t isi_noise;
 	u_int16_t isi_capinfo;		/* capabilities */
 	u_int8_t isi_athflags;		/* Atheros capabilities */
 	u_int8_t isi_erp;		/* ERP element */